I have a Toshiba 50A61 with double words blue and red how to fix

If it's a projection TV, the problem could just be your Convergence. In the menu, there should be a place where you can fine tune the Red Green and Blue guns.

its a convergence problem and fixable

convergence amps bad, also check resisters burnt

There are three, red green and blue in a rear projection set.
They will have to be removed after the liquid filled lenses are emptied and removed.
Re fitting them is the reverse of dissassembly but then the fun starts.
Static convergeance! You will require a crosshatch generator and a service manual to allow you to set up in the correct order.
It is not a task my workshop likes doing because to get it right, takes hours and hours.
Hope that helps.

Sounds like you need to check the convergence. You can in the MENU under PICTURE go down to the CONVERGENCE to make the adjustment, set the RED and BLUE

Ur convergence is dead,must repaced parts.Know how to solders?Buy a convergence kit.Tries Tv repair World.com,Tv repair kits.

You mean fix the remote - - not worth the cost...
Replace it with a miracle remote http://www.miracleremote.com/
Far less than replacing it with the original and it works everything including access to the service menus.. We have several here in the shop for the various brands and we do have the Toshiba.. It is everyhting it says it is...
Bill

http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

There are fuses in this unit, one could be blown there are also capacitors and a regulator that could be at fault I would suggest U find a repair man in your area if possible to go thru this unit find the fault and repair. It would cost less than to repair than buying a new one.

Sounds like a problem with convergence, poss just requires new STK 392-110 ICs , may need a couple of resistors that go due to faulty ICs